Concrete pole nondestructive detector

Abstract

The utility model relates to a concrete pole nondestructive detector which comprises a device main body (1), a main board (6) is arranged in the device main body (1), and walking wheels (11) are arranged on one side, close to a detection target, of the device main body (1); the face, away from a detection target, of the main board (6) and the face, close to the detection target, of the main board (6) are each provided with a magnet exciting coil, and the magnet exciting coils on the two faces are nested in the direction perpendicular to the main board (6) to form a nested magnet exciting coil layout. According to the utility model, the rapid, accurate and nondestructive detection of multiple parameters of the electric pole is realized through the arrangement of the nested excitation coil. And meanwhile, the anti-falling performance of the equipment is improved, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a non-destructive testing instrument for concrete poles. Background Technology

[0002] Traditional methods for inspecting concrete poles primarily rely on destructive methods such as chipping to obtain information about the internal reinforcement configuration. However, this approach not only damages the pole structure but also, due to the limited sample size, fails to comprehensively reflect the overall quality of the pole. Furthermore, existing non-destructive testing methods, such as electromagnetic induction, infrared scanning, radiography, and radar detection, suffer from insufficient accuracy and significant data errors in practical applications, typically around 3-4 mm, rendering the obtained data lacking reference value. During on-site inspections, data recording often relies on handwritten records, which are prone to errors and omissions, and lack digital documentation, making it difficult to verify the authenticity of the data and trace the inspection process in case of quality disputes. Simultaneously, existing equipment is mostly designed for planar scanning, which is illegible for the curved structure of concrete poles, leading to inaccurate test results. Existing equipment (such as the SD-DG240 concrete pole reinforcement non-destructive testing instrument) is frequently damaged by impacts or drops during use; internal electronic components and mainboards are susceptible to impact damage, leading to equipment failure, affecting operational efficiency, and shortening the equipment's lifespan. Therefore, there is an urgent need for a non-destructive testing device for concrete poles that can improve testing accuracy, enhance equipment impact resistance, and enable digital data management. Utility Model Content

[0003] This utility model aims to provide a non-destructive testing instrument for concrete poles to solve the problems of low accuracy, destructiveness, non-standard data recording, and poor impact resistance of traditional testing methods. It can achieve high-precision non-destructive testing of the internal steel reinforcement configuration of concrete poles, improve testing efficiency and data accuracy, and enhance the stability and service life of the equipment.

[0004] This utility model claims protection for a non-destructive testing instrument for concrete poles, which includes: a device body 1, a main board 6 inside the device body 1, and a traveling wheel 11 on the side of the device body 1 close to the test target; an excitation coil is provided on the side of the main board 6 away from the test target and on the side close to the test target, and the excitation coils on the two sides are nested with each other in a direction perpendicular to the main board 6 to form a nested excitation coil layout.

[0005] This nested excitation coil layout significantly improves the accuracy and efficiency of detecting the internal steel reinforcement configuration of the pole.

[0006] Preferably, an excitation coil B104 is provided along the outer contour of the motherboard 6 on the side of the motherboard 6 near the detection target; two identical excitation coils C105 are respectively provided in the excitation coil B104 on the side of the motherboard 6 near the detection target; and four excitation coils A103 are provided on the side of the motherboard 6 away from the detection target.

[0007] Preferably, of the four excitation coils A103, two excitation coils A103 are respectively arranged within the outline of each corresponding excitation coil C105.

[0008] Optionally, at least one of each of the excitation coils A103, B104, and C105 has at least one layer of the same reinforcing excitation coil in a direction away from the motherboard 6.

[0009] Preferably, a silicone gasket 102 is provided between two adjacent layers of excitation coils in each group; and / or a rubber gasket 101 is provided between the enhanced excitation coil and the device body 1.

[0010] Optionally, the walking wheels 11 are located at both ends of the main body 1 of the device and connected by a roller, with one walking wheel 11 connected to each end of the roller.

[0011] Preferably, the walking wheels 11 are located at both ends of the main body 1 of the device and are connected by two rollers. Each roller has one walking wheel 11 connected to each end. At least one end of each roller is provided with a transmission roller 12. The two transmission rollers 12 are connected by a transmission belt 13 so that the two transmission rollers 12 can rotate simultaneously, thereby driving the four walking wheels 11 to rotate simultaneously.

[0012] Preferably, at least one end of the roller is provided with a limiting roller 16, and the limiting roller 16 is coaxially connected to the traveling wheel 11 through the roller to restrict the movement of the traveling wheel 11.

[0013] Preferably, a limiting roller 16 is provided at the other end of each roller, and the limiting roller 16 is coaxially connected to the corresponding traveling wheel 11 through the roller to restrict the movement of the traveling wheel 11.

[0014] Preferably, the transmission roller 12 is provided with a ranging roller 18, and the ranging roller 18 is provided with a ranging sensor 19 for cooperative use. Compared with the prior art, the beneficial effects of this application are as follows:

[0015] This invention enables rapid, accurate, and non-destructive testing of multiple parameters on concrete utility poles, solving problems such as low accuracy, reliance on manual readings, and inability to digitally record data in traditional methods. Simultaneously, the internal anti-drop and impact structure design significantly improves the equipment's impact resistance and extends its service life, providing the power industry with a more efficient, reliable, and safe testing method. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the non-destructive testing instrument for concrete poles according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of one embodiment of the present invention, near the utility pole.

[0018] Figure 3 This is a schematic diagram of the structure of the infrared scanning module in one embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the excitation coil on the side closest to the utility pole in one embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the excitation coil structure on the side near the handle in one embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the buffer structure in one embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the motherboard structure in one embodiment of the present invention;

[0023] Figure 8 This is a side view of the motherboard in one embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram of the structure near the utility pole in another embodiment of the present invention;

[0025] Figure 10 This is a schematic diagram of the walking device in another embodiment of the present invention;

[0026] Figure 11 This is a structural diagram of another embodiment of the present utility model.

[0027] The components are as follows: 1 is the main body of the device, 2 is the display screen, 3 is the button, 4 is the handle, 6 is the main board, 10 is the infrared scanning module, 11 is the walking wheel, 12 is the transmission roller, 13 is the transmission belt, 14 is the roller, 15 is the sealing strip, 16 is the limit roller, 17 is the limit roller rolling groove, 18 is the ranging roller, 19 is the ranging sensor, 20 is the infrared temperature probe, 21 is the transparent plate, 22 is the excitation coil A groove, and 23 is the shock absorber. Screw, 24 is a shock-absorbing spring, 25 is a travel wheel axle, 26 is a travel wheel bearing housing, 27 is a roller bearing housing, 28 is a universal joint, 29 is a shock absorber, 101 is a rubber pad, 102 is a silicone pad, 103 is an excitation coil A, 104 is an excitation coil B, 105 is an excitation coil C, 106 is a heat dissipation cavity groove, 113 is an enhanced excitation coil A, 114 is an enhanced excitation coil B, and 115 is an enhanced excitation coil C. Detailed Implementation

[0028] The present application will now be described in further detail with reference to the accompanying drawings, clearly and completely illustrating the technical solutions in the embodiments of the present utility model. Obviously, the described embodiments are merely some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. The terminology used in the implementation section of this application is only used to explain specific embodiments of the present application and is not intended to limit the present application.

[0029] Figure 1 This is a schematic diagram of the non-destructive testing instrument for concrete poles according to an embodiment of the present invention.

[0030] Figure 2 This is a schematic diagram of the structure of one embodiment of the present invention, near the utility pole.

[0031] See Figure 1-2 A concrete pole non-destructive testing instrument according to an embodiment of this utility model includes a main body 1, a main board 6 inside the main body 1, a traveling wheel 11 on the side of the main body 1 near the test target, and a handle 4 on the side of the main body 1 away from the test target. Excitation coils are respectively arranged on the side of the main board 6 away from and near the test target, and the excitation coils on both sides are nested together in a direction perpendicular to the main board 6 to form a nested excitation coil layout. The test target is a concrete pole.

[0032] Figure 3 This is a schematic diagram of the infrared scanning module in one embodiment of the present invention.

[0033] See Figure 3As an improvement to a specific embodiment, an infrared scanning module 10 is provided on the side of the device body 1 closest to the detection target. Specifically, the infrared scanning module 10 includes a transparent plate 21 and one or more infrared temperature probes 20 disposed on the transparent plate 21.

[0034] Figure 4 This is a schematic diagram of the excitation coil on the side closest to the utility pole in one embodiment of the present invention.

[0035] As an improvement to a specific embodiment, four evenly distributed rectangular excitation coils A103 are provided on the back side of the motherboard 6, i.e., the side away from the detection target; an excitation coil B104 is provided along the outline of the motherboard 6 on the front side of the motherboard 6, i.e., the side closer to the detection target, and two identical excitation coils C105 are respectively provided within the excitation coil B104. Specifically, there are two rectangular excitation coils C105 and one rectangular excitation coil B104, with the two rectangular excitation coils C105 evenly distributed inside the rectangular excitation coil B104. On the back side of the motherboard 6, the two rectangular excitation coils A103 are evenly distributed within the outline of each rectangular excitation coil C105; that is, of the four excitation coils A103, two excitation coils A103 are respectively located within the outline of each corresponding excitation coil C105.

[0036] In this embodiment, a rectangular excitation coil is shown as an example, but the present invention is not limited to this and may also be an excitation coil with other contour shapes.

[0037] As an improvement to a specific embodiment, the excitation coil is provided with an enhanced excitation coil in a direction away from the motherboard 6.

[0038] As an improvement to a specific embodiment, the enhanced excitation coil is an excitation coil with the same winding direction, shape, and number of layers.

[0039] As an improvement to a specific embodiment, a silicone pad 102 is provided between the two identical excitation coils.

[0040] As an improvement to a specific embodiment, a rubber gasket 101 is provided between the enhanced excitation coil and the device body 1.

[0041] As an improvement to a specific embodiment, the main body 1 of the device includes a transmission interface located on the side and a display screen 2 and a transparent protective cover for the display screen 2 located at the front end of the handle 4. The surface of the handle 4 is provided with anti-slip wavy convex texture, and an elastic anti-slip sleeve is fitted on its surface.

[0042] As an improvement in a specific embodiment, the walking wheels 11 are located at both ends of the main body 1 of the device and connected by rollers; each of the two rollers is equipped with a transmission roller 12, and the two transmission rollers 12 are connected by a transmission belt 13; each transmission roller 12 is equipped with a distance measuring roller 18, and a distance measuring sensor 19 that cooperates with the distance measuring roller 18. The walking wheels 11 are located at both ends of the main body and connected by rollers. The transmission rollers 12 at both ends are linked by a synchronous belt to ensure synchronous movement of the front and rear wheel sets and avoid measurement errors caused by slippage or asynchrony. The distance measuring module consists of the distance measuring roller 18 and the distance measuring sensor 19, and achieves accurate distance measurement by calculating the rotational displacement. The device has a range of 0-30 meters and an accuracy of ±0.01 meters. Example 1

[0043] like Figure 1-10 As shown, the concrete pole non-destructive testing instrument of this embodiment includes a main body 1, a handle 4 horizontally arranged directly above the main body, wheels 11 installed at both ends of the main body, a main board 6 located inside the main body, wheels 11 installed at both ends of the main body, a limiting device, a transmission device, and a shock absorption device.

[0044] The main body 1 of the device has a transmission interface on its side, and the front end of the handle 4 has a display screen 2 and a transparent protective cover for the display screen 2. The surface of the handle 4 is provided with anti-slip wavy raised texture and is fitted with an elastic anti-slip sleeve to facilitate the operator's grip and prevent slippage.

[0045] When the main body 1 of the device is located directly above the outer curved surface of the concrete pole, the long side of the main body of the device is perpendicular to the central axis of the concrete pole. At this time, the traveling wheels 11 move vertically along the outer curved surface of the concrete pole, 2 cm above, directly above, and 2 cm below the steel bars being measured, respectively, thereby obtaining the position, spacing, and protective layer thickness of the steel bars in the concrete pole.

[0046] After confirming the location of the reinforcing bar, place the main body of the device 1 directly above the reinforcing bar and close to the outer surface of the concrete pole. At this point, the long side of the main body of the device is parallel to the central axis of the concrete pole. Subsequently, move the main body downwards 20 cm along the direction of the reinforcing bar for inspection, thereby determining the diameter and degree of corrosion of the reinforcing bar.

[0047] Figure 5 This is a schematic diagram of the excitation coil A on the side near the handle in one embodiment of this utility model. See also... Figure 4-5On the side of the mainboard 6 furthest from the target utility pole, four evenly distributed rectangular excitation coils A103 are arranged. On the side of the mainboard 6 closest to the target utility pole, two rectangular excitation coils C105 and one rectangular excitation coil B104 are arranged. The two rectangular excitation coils C105 are evenly distributed inside the rectangular excitation coil B104. On the side of the mainboard 6 furthest from the target utility pole, two rectangular excitation coils A103 are evenly distributed within the outline of each rectangular excitation coil C105. This nested layout of excitation coils A, B, and C has the following technical effects: when the magnetic fields generated by multiple coils are in the same direction, the magnetic induction intensity of the nested excitation coils will increase, thereby enhancing the magnetic penetration effect. In addition, the nested layout can shorten the magnetic flux transmission path, reduce magnetic flux loss, and enhance the magnetic induction penetration capability. On the front of the mainboard 6, near the utility pole, the large rectangular excitation coils B104 and C105 are responsible for providing the induced magnetic field; on the back of the mainboard 6, near the handle 4, the four small rectangular excitation coils A103 are responsible for receiving the reflected magnetic field signal; all the excitation coils A, B, and C do not overlap in the vertical direction.

[0048] The limiting device includes a limiting roller groove 17 disposed inside the main body and a limiting roller 16 disposed within the limiting roller groove 17. A limiting roller 16 is disposed at the other end of each roller shaft. The limiting roller 16 is coaxially connected to the corresponding traveling wheel 11 via the roller shaft to limit the movement of the traveling wheel 11. Since the limiting roller 16 and the traveling wheel 11 are coaxially connected, when the traveling wheel 11 moves on the surface of the utility pole, and the main board senses the reinforcing steel, the limiting roller 16 increases resistance to reduce the traveling wheel 11's speed, preventing the detector from deviating from the target position. This structure limits the movement range of the traveling wheel 11, preventing the equipment from deviating from the target position due to slippage during detection, and ensuring the accuracy of the detection data.

[0049] The transmission device includes traveling wheels 11 and rollers connecting the traveling wheels 11. The traveling wheels 11 are located at both ends of the main body 1 of the device and are connected by two rollers, with one traveling wheel 11 connected to each end of each roller. At least one end of the main body 1 of the device has a transmission roller 12 on each of the two rollers. The two transmission rollers 12 are connected by a transmission belt 13. Preferably, the transmission shafts of the transmission rollers 12 and the traveling wheels 11 are respectively equipped with gears, and the transmission belt 13 is connected by the gears to achieve synchronous rotation. The transmission belt 13 mainly serves to connect the transmission rollers 12 and the traveling wheels 11. Specifically, the shafts of the two traveling wheels 11 are connected by the transmission belt 13 to achieve simultaneous rotation, thereby driving the four traveling wheels (11) to rotate simultaneously. When the limiting roller 16 on one side applies resistance, it can simultaneously restrict the movement of the two traveling wheels 11. In this way, the four traveling wheels 11 are driven simultaneously by the transmission belt 13 to achieve a four-wheel drive effect. One of the transmission rollers 12 is equipped with a ranging roller 18 and a ranging sensor 19 used in conjunction with it, which is used to monitor the moving distance of the equipment in real time and improve the detection accuracy.

[0050] In this embodiment, two rollers are shown as an example, each roller having one wheel 11 at each end, for a total of four wheels 11. However, this utility model is not limited to this; optionally, one roller may be provided, with one wheel 11 at each end, for a total of two wheels 11.

[0051] Figure 6 This is a schematic diagram of the buffer structure in one embodiment of the present invention.

[0052] See Figure 6 The shock absorption device includes shock-absorbing silicone pads 102 respectively disposed on the front and back of the motherboard 6. See also... Figure 5 The motherboard 6 has a shock-absorbing silicone pad 102 on the back with shallow grooves that fit into the four rectangular excitation coils A103, namely the excitation coil A groove 22, which can prevent the excitation coils from directly contacting the main body and causing collisions. The motherboard 6 has a shock-absorbing silicone pad 102 on the front with shallow grooves that fit into the two rectangular excitation coils C105 and one rectangular excitation coil B104, which also play a role in buffering and fixing, protecting the motherboard 6 and electronic components from vibration.

[0053] Through the above structural design, the detection accuracy of this embodiment reaches the millimeter level, reducing the error to below 0.5mm compared to traditional methods, significantly improving the accuracy and reliability of the detection. Simultaneously, the internal installation of limiting rollers 16 and silicone shock-absorbing pads effectively prevents damage to electronic components and the motherboard 6 in the event of collisions or drops, enhancing the device's drop resistance and extending its service life. Example 2

[0054] In this field, physical current transformers with permanent magnets are generally used for magnetic field excitation and signal reception; in this application, the main board 6 is constructed by directly wiring and winding coils to form a magnetic induction coil.

[0055] In a preferred embodiment, at least one of each of the excitation coils A103, B104, and C105 has at least one layer of the same reinforcing excitation coil in a direction away from the motherboard 6.

[0056] Specifically, this embodiment adds two layers of magnetic induction coils to the first embodiment to increase the magnetic induction intensity and thus improve measurement accuracy. Four evenly distributed rectangular reinforcing excitation coils A113 are arranged near the handle 4 of the excitation coil A; two rectangular reinforcing excitation coils C115 and one rectangular reinforcing excitation coil B114 are arranged near the utility pole of the excitation coils C and B. The reinforcing excitation coils A113 and A, B114 and B, and C115 and C maintain consistency in winding direction, shape, and number of layers.

[0057] like Figure 6 As shown, a silicone pad 102 is placed between the excitation coil and the main excitation coil, and a rubber pad 101 is placed between the excitation coil and the device body. All coils are fitted with heat dissipation cavity grooves 106. A groove corresponding to the outline of the coil is cut into the pad, allowing the coil to fit perfectly. Furthermore, all pads are perforated, which facilitates heat dissipation. The coil fits perfectly within the heat dissipation cavity groove 106. A silicone pad 102 and a nitrile rubber pad 101 are respectively placed on the upper and lower sides of the excitation coil. Using two layers of pads provides cushioning and protection, as well as fixing and limiting the coil, minimizing coil movement relative to the motherboard 6. Excessive or large-amplitude coil movement can easily cause the coil to detach and damage the motherboard 6. Example 3

[0058] Building upon Examples 1 and 2, this embodiment employs a combined detection mode of electromagnetic induction and infrared scanning to detect parameters such as the location of reinforcing bars, the thickness of the protective layer, the diameter of the reinforcing bars, and the degree of corrosion. The electromagnetic induction module senses changes in the magnetic field surrounding the reinforcing bars, while an infrared temperature probe captures the thermal radiation signals from the reinforcing bars. This multi-source data analysis enhances the dimensionality and accuracy of the detection. The electromagnetic induction module uses an electromagnetic induction coil as its core component. Based on the law of electromagnetic induction, changes in electrical parameters caused by the interaction of the magnetic field between the coil and the reinforcing bars allow for the inference of the reinforcing bar's location, protective layer thickness, diameter, and degree of corrosion. The infrared temperature probe receives the thermal radiation signals from the reinforcing bars using an infrared sensor. By analyzing the radiation intensity, wavelength, and attenuation characteristics, it assists in determining the aforementioned parameters. The data processing and fusion system simultaneously acquires electromagnetic and infrared data, performs preprocessing such as filtering and noise reduction, correlates the magnetic field and radiation parameters, optimizes the calculation process, and ultimately outputs relatively intuitive detection results. The device is designed to be handheld and portable, integrating a probe and a main unit. The probe has a built-in electromagnetic coil and infrared sensor, while the main unit includes data processing, power supply, and display modules. The device is made of wear-resistant and interference-resistant probe shell and lightweight and sturdy main unit shell, and is equipped with a display screen, operation buttons, and data storage and transmission functions.

[0059] The integrated design of the composite rebar detector, combining technology and structure, addresses the requirements of dual-modal sensing technologies: electromagnetic induction and infrared thermal imaging. It employs a parallel mechanical structure to leverage the complementary advantages of both technologies, achieving high-precision, multi-parameter, and high-reliability detection capabilities that are difficult to achieve with a single technology. In terms of detailed mechanical structure design, the probe adopts a vertically layered modular design, consisting of, from bottom to top, an electromagnetic induction module, an infrared temperature measurement module, a connecting layer, and a mainboard 6 containing the data processing core. The bottom layer of the electromagnetic induction module contains a precision-wound array of transmitting and receiving coils. The outer shell is made of a non-metallic material that is transparent to electromagnetic fields and wear-resistant, minimizing the distance between the coils and the reinforcing bars to ensure detection depth and signal strength. The infrared temperature measurement module, which is located side by side at the bottom layer, is separated from the electromagnetic module by a silicone pad 102, achieving both electrical insulation and mechanical buffering. The coaxial design also ensures that the electromagnetic induction and infrared thermal imaging detection fields of view are basically aligned. The nitrile rubber pads on the connecting layer enable the device to achieve a high protection level such as IP54. The motherboard 6 and the data processing core on the top layer are separated from the infrared module by a thermally conductive silicone pad 102 to prevent heat from affecting the temperature measurement accuracy. At the same time, the top position is conducive to heat dissipation and connection with the host.

[0060] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0061] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A non-destructive testing instrument for concrete utility poles, characterized in that, include: The device body (1) has a main board (6) inside and a walking wheel (11) is provided on the side of the device body (1) close to the detection target. The motherboard (6) has an excitation coil on the side away from the detection target and on the side close to the detection target, and the excitation coils on both sides are nested in the direction perpendicular to the motherboard (6) to form a nested excitation coil layout.

2. The non-destructive testing instrument for concrete poles according to claim 1, characterized in that, An excitation coil B (104) is provided on the side of the main board (6) that is close to the detection target, along the outline of the main board (6). On the side of the main board (6) closest to the detection target, two identical excitation coils C (105) are respectively arranged inside the excitation coil B (104). Four excitation coils A (103) are provided on the side of the main board (6) away from the detection target.

3. The non-destructive testing instrument for concrete poles according to claim 2, characterized in that, Of the four excitation coils A (103), two excitation coils A (103) are respectively set within the outline of each corresponding excitation coil C (105).

4. The non-destructive testing instrument for concrete poles according to claim 3, characterized in that, At least one of each of the excitation coils A (103), B (104), and C (105) has at least one layer of the same reinforcing excitation coil in a direction away from the main board (6).

5. The non-destructive testing instrument for concrete poles according to claim 4, characterized in that, A silicone pad (102) is provided between each pair of adjacent excitation coils; and / or A rubber gasket (101) is provided between the enhanced excitation coil and the main body of the device (1).

6. The non-destructive testing instrument for concrete poles according to any one of claims 1-5, characterized in that, The walking wheels (11) are located at both ends of the main body (1) of the device and are connected by a roller. Each end of the roller is connected to one of the walking wheels (11).

7. The non-destructive testing instrument for concrete poles according to any one of claims 1-5, characterized in that, The walking wheels (11) are located at both ends of the main body (1) of the device and are connected by two rollers. Each roller is connected to one of the walking wheels (11) at each end. At least one end of each roller is provided with a transmission roller (12), and the two transmission rollers (12) are connected by a transmission belt (13) so that the two transmission rollers (12) can rotate simultaneously, thereby driving the four walking wheels (11) to rotate simultaneously.

8. The non-destructive testing instrument for concrete poles according to claim 6, characterized in that, Also includes: At least one end of the roller is provided with a limiting roller (16), which is coaxially connected to the traveling wheel (11) through the roller to restrict the movement of the traveling wheel (11).

9. The non-destructive testing instrument for concrete poles according to claim 7, characterized in that, Also includes: Each roller is provided with a limiting roller (16) at the other end. The limiting roller (16) is coaxially connected to the corresponding traveling wheel (11) through the roller to restrict the movement of the traveling wheel (11).

10. The non-destructive testing instrument for concrete poles according to claim 7, characterized in that, The transmission roller (12) is provided with a distance measuring roller (18), and the distance measuring roller (18) is provided with a distance measuring sensor (19) for use in conjunction with it.

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